Poykio, R. , Manskinen, K. , Dahl, O. , Mäkelä, M. , Nurmesniemi, H. (2011), 'Release of Elements in Bottom Ash and Fly Ash from Incineration of Peat- and Wood-Residues using a Sequential Extraction Procedure', World Academy of Science, Engineering and Technology, Open Science Index 60, International Journal of Chemical and Molecular Engineering, 5(12), 1146 - 1150.